Duran® Premium lab flasks, with Premium screw cap and pouring ring

If standard is not sufficient

The Premium flask is a further development of the standard Duran^® flasks with the blue GL45 cap. Besides the material characteristics like chemical resistance, inertness, traceability and high temperature resistance, this Premium flask offers even other benefits: safety and simple handling.

• Graduated.
• Duran^® quality: chemically resistant (acidproof class 1), hydrolytic resistance class 1 and log resistance class 2.
• The Premium lab flask is provided with a tracing code. With standard flasks, you can download a lot certificate via the Duran^® website. With these premium flasks, this lot certificate will be delivered with the packaging automatically. It gives you information about the production date, standardizations and the evidence that you have purchased the Duran^® quality.
• The graduation is accurate up to 5% and is both rising and lowering, so that you can both see how much liquid is still present in the flask and how much liquid has gone out.
• The Duran^® Premium flask has a high temperature change resistance of 160k. Tested and nominated according to the severe requirements of the TÜV and provided with a GS marking.